Part number H90M5.7X51.6 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 51.6 mm (2.031 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 63 mm (2.48 in). An o-ring compresses into its gland to block fluid or gas migration across a joint. Supplementary detail from the product record: Metric O-RING, JIS P52.
It resists hydraulic fluids, petroleum-based oils, and water. Buna-N (Nitrile) is valued for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).
Typical settings include fluid power, construction equipment, and automotive.
Reference part number H90M5.7X51.6 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.
Description 5.7MM CS X 51.6MM ID BLACK BUNA 90D
Actual Outside Diameter 63 mm (2.48 inch)
Actual Cross Section 5.7 mm (0.224 inch)
Actual Inside Diameter 51.6 mm (2.031 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity